Am Freitag, den 16.06.2006, 15:41 -0500 schrieb JWM: > I completely understand that many factors can affect throughput, but I'd > just like to find out if I'm in the correct ballpark, or if I have some > problems that need to be addressed. > > > > When my outbound spool gets full and is running full-throttle sending > outbound emails as fast as it can, according to the log files, I'm averaging > about 5 emails going out every minute. This works out to about 10 seconds > per email.
Maybe you should try to increase the deliveryThreads. The default is: <deliveryThreads> 1 </deliveryThreads> This is seems anyway a bit low to me. We should maybe increase the standard value. We use about 10 here! Anyway you can read about throughput here: http://wiki.apache.org/james/JamesByTheNumbers > > > > I'm not even close to being network bound. I'm on a co-lo server with a > major provider. My network adapter isn't showing anywhere near capacity. > My processor is running at 4-5%. So I'm assuming all of the time is spent > in contacting remote servers and establishing the connection to send the > email. Does it really take that long per email? Yes it can. But IMHO its not normal. At first i whould check if your DNS settings are correct. If thats correct i whould check the firewall. Or maybe the traffic shaping if you use some. > > > > Just wondering if, in the interest of curbing spam, my co-lo provider is > possibly throttling back on port 25 or purposely inserting delays. I've > heard of DSL and cable providers doing that for home users. But hopefully > not a business co-lo provider.. Normally they only block port 25 completly if they want not clients to send email without use of their server. If so your provider maybe offer a way of using his mailserver as relay. > > > > Or is it possible that the target servers are inserting delays? It seems > that "outblaze.com" almost always takes 8-10 minutes to send to. > Thats also possible and is named tarpitting. But its not so famous. Read here for more infos what tarpid is: http://www.palomine.net/qmail/tarpit.html Also james support this feature in latest 2.3.0 release ;-) You could test how long it takes to send an email to the server by use telnet and send "directly" an email to an recipient on this server. > > > Anyway, could you tell me if averaging 5 emails per minute running full > throttle is pretty much the norm, or is this seriously low? > Yes its to low. Like i said before. > > > Jerry bye Norman
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